#!/usr/bin/env node

var path = require("path"),
    minimist = require("minimist"),
    esperanto = require("esperanto");

var argv = minimist(process.argv.slice(2));

var polyfill = {
  "Map":
      'if (!this.Map) {\n' +
      '  Map = function() {};\n' +
      '  Map.prototype = {\n' +
      '    set: function(k, v) { this["$" + k] = v; return this; },\n' +
      '    get: function(k) { return this["$" + k]; },\n' +
      '    has: function(k) { return "$" + k in this; }\n' +
      '  };\n' +
      '}\n' +
      '\n'
};

esperanto.bundle({
  entry: "standalone.js",
  modules: {
    "standalone.js":
        'import index from ' + JSON.stringify("./" + argv._[0]) + ';\n' +
        'var d3 = global.d3;\n' +
        'if (d3) for (var field in index) d3[field] = index[field];\n' +
        'else global.d3 = d3 = index;\n' +
        'if (typeof define === "function" && define.amd) define(d3);\n' +
        'else if (typeof module === "object" && module.exports) module.exports = d3;\n'
  }
}).then(function(bundle) {
  process.stdout.write(bundle.concat({
    indent: "  ",
    intro:
        (argv["polyfill-map"] ? polyfill.Map : "") +
        '(function(global) {\n' +
        '  "use strict";\n' +
        '\n',
    outro:
        '\n' +
        '})(typeof global === "undefined" ? this : global);\n'
  }).code)
}).catch(function(error) {
  console.error(error);
});